* {
    padding: 0px;
    margin: 0px;
}

.clear::after {
    content: "";
    display: block;
    clear: both;
}

#mainDiv {
    /* width: 100%; */
    height: 100%;
    /* border: 1px solid black; */
    padding: 40px;
    background-color: #FFF;
}

#mainDiv>div:first-child {
    margin-bottom: 30px;
}

#mainDiv>div:first-child>div:first-child {
    float: left;
}

#mainDiv>div:first-child>div:last-child {
    float: right;
}

#mainDiv>div:first-child>div:first-child>span {
    font-size: 25px;
    font-weight: 700;
}



#mainDiv>div:first-child>div:last-child>button:first-child {
    padding: 5px 20px;
    border: 0px;
    border-radius: 5px;
    background-color: #61a4e4;
    color: white;
}

#mainDiv>div:first-child>div:last-child>button:last-child {
    padding: 5px 20px;
    border: 0px;
    border-radius: 5px;
    background-color: #64c8bc;
    color: white;
}


/* 第二部分 */
#mainDiv>div:nth-child(2) {
    text-align: center;
}

#mainDiv>div:nth-child(2)>div:last-child {
    text-align: left;
}

#mainDiv>div:nth-child(2)>div:first-child {
    color: #344563;
    margin-bottom: 30px;
}

#mainDiv>div:nth-child(2)>div:nth-child(2) {
    color: #6554C0;
    margin-bottom: 30px;
}

#mainDiv>div:nth-child(2)>div:nth-child(2)>span {
    margin-right: 15px;
    font-weight: 700;
}

#mainDiv>div:nth-child(2)>div:last-child>p {
    color: #AFB4BE;
    margin-bottom: 15px;
}

/* 返回按钮 */
#mainDiv>div:last-child {
    text-align: center;
}

#mainDiv>div:last-child>button {
    margin-top: 300px;
    padding: 10px 30px;
    color: white;
    background-color: #61a4e4;
    border: 0px;
    border-radius: 5px;
}